Wire-bending machine.



W. H. PARKER.

WIRE BENDING MACHINE. APPLICATION FILED APR. 29, 1909.

' 957,245. Patented May 10,1910.

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WIRE BENDING MACHINE.

AEPLIGATION FILED APB..29, 1909.

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W. H. PARKER.

WIRE BENDING MACHINE. APPLIUATION FILED APR. 29, 1909.

95 ?,245, Patented May 10, 1910.

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W. H. PARKER. WIRE BENDING MACHINE.

APPLICATION FILED APR. 29, 1909.

Patented May 10, 1910.

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WILLIAM H. PARKER, 01? PASSAIG, NEW JERSEY.

WIRE-BENDING MACHINE.

Specification of Letters Iatent.

Patented May 10 1910.

Application filed April 29, 1909. Serial No. 493,037.

T 0 all whom it may concern:

Be it known that I, WILLIAM H. PARKER, of Passaic, Passaic county, New Jersey, have invented a new and useful Improvement in Wire-Bending Machines, of which the following is a full, clear, and exact description.

My invention relates to improvements in wire bending machines, and the object of my invention is to produce a simple form of machine in which a suitable wire may be inserted and through which the wire will be automatically fed and bent to a desired shape or design.

My invention in the design shown, is intended to form corset springs outof wire by forming the wire into a series of connected loops or bends which will give it the necessary width, and which will have the required resiliency, but the machine, as will appear from the description which follows, can readily be adapted to bend wire into different and preferred shapes.

More specifically, my invention comprises a main slide which gives the wire the necessary movement in one direction and regulates the depth of the bend or loop, a second slide mounted in and moving at right angles to the first slide, the said second slide carrying forming arms over which the wire is shaped, and a third slide or plunger through which the wire is fed and which descending over the forming arms gives the necessary and final shape to the wire. These several slides are all operated from a single cam which can be adjusted to give the desired throw to the slides, and which is constructed and arranged in connection with the other operative parts so that at every revolution of the shaft, the main slide is given a complete reciprocation, the secondary slide is also similarly reciprocated, and two loops are formed. Allthis is done by simple mechanism which renders the ma chine very rapid in operation, while the accessory devices and the detail construction render the machine accurate in its operations.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a sectional elevation of the machine embodying my invention. Fig. 2 is a detail elevation of the cam and driving mechanism. Fig. 3 is a front elevation partly in vertical section. Fig. 4 is a detail plan of the main slide. Figs. 5 and 6 are broken details showing means for adjusting the throw of the main slide. Fig. 7 is a broken plan view of the cam. Fig. 8 is a sectional plan showing the relation of the two slides and the plunger. Fig. 9 is a broken plan view of the machine. Fig. 10 is a detail section showing the first position of the wire and the action of the plunger and forming arms thereon. Fig. 11 is a detail elevation at right angles to the view shown in Fig. 10. Figs. 12 and 13 are views similar to Figs. 10 and 11, but showing the wire and the operating parts in an advanced position. Figs. 14: and 15 are similar views but showing a still further step in the formation of the loops. Figs. 16 and 17 are similar views showing still another step in which the loop is completed. Fig. 18 is a plan view of the cam as a whole. Fig. 19 is a detail of the removable middle section of the cam. Fig. 20 is a detail showing the formation of the second loop. Fig. 21 is an end view of the slide and forming arms thereon. Fig. 22 is a detail view showing the adaptation of the machine to a different kind of looped wire. Fig. 23 is a detail showing in end elevation, the forming arms illustrated in Fig. 22, and Fig. 24: is a detail of the formed wire.

The machine is provided with a suitable frame 10 having a flat top 11 on which is mounted the main cam 12 which turns on a vertical axis and is carried on ball bearings 13. The shaft 14 of the cam (see Fig. 2) is also mounted on ball bearings preferably, and connects by pinions 16 and 17 with the driving shaft 18 which is held in bearings 19, preferably ball bearings, and is driven by a clutch pulley apparatus shown at 20 so that the movements of the machine can be readily controlled. Mounted flatwise just above the cam (see Fig. 1) is the main slide 22 which moves in a suitable way 23 and which has a depending roller 2 1 carried preferably on a screw 25 and extending into one of the channels 26 (see Fig. 7 of the cam 12, and thus the rotation of the cam gives the necessary backward and forward movement to the slide 22. The throw of the slide regulates the depth of the loops formed in the wire, and I have therefore provided means for regulating this throw to make the machine adaptable.

In Figs. 4:, 5 and 6 it will be seen that the slide is recessed on the top as shown at 2?, so as to receive the fastening gib 28, having a central boss 30 which fits the hole 29 in the slide, and the screw 25 already referred to extends through this boss and into the raceway or groove 26, the screw 25 being eccentrio in the boss 30, and by varying these bosses as shown, the position of the screw is changed and likewise the throw of the slide. Any other suitable means may be employed, however, for effecting this adjustment.

Arranged transversely of the main slide 22 is a way 31 in which moves the second slide 32, which thus travels at right angles to the slide 22, and the slides are dove-tailed together as shown at 32 in Fig. 1 so that they will not cramp, but may slide both ways freely when the cam is turned, that is to say, the slide 32 can move transversely of the slide 22 and also have a limited movement parallel with the movement of the slide 22.

On the slide 32 are blocks 33 carrying the forming arms 3 which are in such cross sectional shape as to give the desired form to the loops in the wire presently referred to, and these forming arms face each other, overlap slightly, are pointed at their inner ends and are offset with relation to each other. The slide 32 also moves through a block which is carried by the main slide 22 and this supports shedder plates 36' which are arranged parallel with each other and which straddle the forming arms 34; and lie each side of the wire 36 which is fed downward between the shedder plates, over the forming arms and through a central hole 36 in the machine as shown in Fig. 3. The second slide 32 is worked by means of a roller 37 on the under side which enters the second race-way 38 in the cam 12, and to provide for adjustment, this inner groove or race-way 38 is formed in a detachable part 39 of the cam, so that if a different impulse is desired, this portion can be removed and a new one substituted which has a slightly dif ferent contour of cam groove. The part 39 is held to the main cam by means of a stud or shaft 4-0 (see Fig. 2).

The third slide or plunger 411 which in conjunction with the forming arms 3 1 shapes the wire, is a thin flat plunger moving with the slide block 1-2 in the offset portion 1O on the frame, and this plunger has a hole in the center to receive the wire 36 as shown in Figs. 10 to 17, and its lower edge is shaped to give the desired formation to the wire and to fit when in its lowest position over the forming arms 34.

Referring to the above named figures, it will be seen that for making the particular form of wire shown in Fig. 3, the plunger has at its lower edge diverging rounded projections 11 behind which it is recessed as shown at al this recess portion fitting over the forming arms as shown in Fig. 10 and it will be further observed that the plunger has this arrangement duplicated on opposite sides of its bore.

When the wire 36 is inserted into and through the plunger 41, the machine is first turned by hand, and this carries the slide 22 forward so as to bend the wire over one of the forming arms 34, and as the plunger descends, it shapes th wire to correspond with the boss 4-1 and the wall of the recess al The machine can then be started by power and will be automatic, and so far as the loop formation is concerned, it will be seen that the reciprocation of the slides will cause the wire to be bent beneath the point of the second forming arm 3 1 which will have advanced to the position shown in Fig. 12, and the second descent of the plunger will complete the loop by shaping the other side of it as shown in Fig. 14, and these operations will be continued so long as the machine is run. The plunger then ascends to the position shown in Fig. 16, and the reciprocation of the slides causes the wire to be bent over one of the formin arms ready for the formation of another loop.

It will be seen that the alternate reciprocation of the plunger and the moving of the slides, so as to bring the forming arms alternately into engagement with the wire, serves as the feeding device, so that the forming and feeding devices are really one.

In Figs. 22 and 23 I have shown the forming arms 34 of different shape, and the lower end of the plunger 1-1 is correspondingly shaped so as to make loops of a different kind, and this illustrates the fact that the design of the formed wire can be changed in many ways without affecting the principle of the invention, and it will be further observed that the wire is bent between the shedder plates 36% so that it has no chance to become distorted except bent by the plunger, as the shedder plates hold the loops all in a definite plane.

The plunger ail is moved by the slide block 12 which is recessed in the back as shown at 13 in Fig. 1, and into this recess extends one arm of the two armed lever 44 which is mounted on an idle shaft 45 in the off-set 10 of the machine. The lever is cushioned by a spring 16, and its second arm extends into the recess 17 of the slide block '17 which moves vertically in the part 10 of the machine and has a roller 18 which runs on the cam 12 and in the path of the bosses 49 (see Fig. 7), near opposite edges of the cam, so that when either of these bosses passes beneath the roller 18 it will throw up the slid block 4'? suddenly, and suddenly throw down the slide block 12, thus causing the plunger 11 to deliver a blow as well as pressure on the wire or stock 36. A spring 50 secured to the part 10 of the machine presses down on the slide block 47 and keeps the roller 48 in close contact with the cam bosses or projections above referred to. I find this mechanism for operating the plunger suitable, and it works well in actual practice, but I do not limit myself to this structure as the plunger 41 can be operated in any suitable manner, the only thing necessary being to have its movement properly timed with relation to the movements of the slides 22 and 32.

Having thus fully described my inven tion, I claim as new and desire to secure by Letters Patent l. A wire forming machine comprising a main reciprocating slide, a second slide moving transversely in the first slide, opposed forming arms carried by the second slide, a plunger shaped to descend over the forming arms, and having opposite parts shaped to fit the forming arms, and means for delivering the wire to the forming arms from a position near the center of the plunger.

2. A wire bending machine comprising a main reciprocating slide, a second slide reciprocating transversely on the main slide, forming arms carried by the second slide, a plunger reciprocating opposite the forming arms, and having sections shaped to alternately fit the forming arms, means for delivering wire stock between the plunger and the forming arms, and mechanism operated from a single cam for working the two slides and the plunger.

3. A wire bending machine comprising a main reciprocating slide, a second slide moving transversely on the first slide and provided with opposite forming arms, shedder plates supported on the first slide and eX- tending over the forming arms, and a plunger moving between the shedder plates and over the forming arms.

L. A wire bending machine comprising a main reciprocating slide, a second slide moving transversely on the first slide, forming arms carried by the second slide, and a hollow plunger having its surface on opposite sides of the bore shaped to fit the forming arms, whereby the wire stock can be fed through the hollow plunger between its wire shaping parts to the forming arms.

5. In a machine of the kind described, the combination with the reciprocating opposed forming arms and means for moving the arms bodily and transversely to their length, of a hollow plunger reciprocating opposite and having opposed parts fitting over the forming arms, and means for feeding wire through the said plunger between its wire shaping parts to the forming arms.

6. The combination with the reciprocating forming arms moving longitudinally and laterally, of the hollow stock receiving plunger reciprocating opposite the forming arms and having its surface 011 opposite sides of its bore shaped to fit over the forming arms whereby the stock is fed through the said bore to the said forming arms.

7. A wire bending machine comprising a main reciprocating slide, a second slide reciprocating transversely of the first slide, forming arms on the second slide, a hollow plunger reciprocating opposite the forming arms and having its surface on opposite sides of its bore shaped to fit over the forming arms, whereby the wire stock can be fed through the plunger between the wire shaping parts to the said forming arms and a cam mechanism for imparting motion to the two slides and to the plunger.

8. A wire bending machine comprising a main reciprocating slide, a second slide moving transversely on the first slide, opposed and off-set forming arms on the second slide, shedder plates carried by the first slide and spanning the forming arms, a hollow plunger moving snugly between the shedder plates and having its surface on opposite sides of the bore shaped to fit over the forming arms, and means for imparting motion to the two slides and the plunger.

9. In a machine of the kind described, the combination with the main reciprocating slide and the second slide moving transversely on the first slide, of a cam having a permanent race-way to drive the main slide and a removable race-way to drive the second slide.

10. The combination with the rotating cam having a race-way therein, and the re ciprocating slide having a recess and bore therein, of a gib fitting the recess and bore and a roller supported in the gib and extending into the race-way of the cam.

11. The combination with the reciprocating main slide, of a block carried thereby and :provided with shedder plates, a second slide reciprocating on the main slide, forming arms carried by the second slide and reciprocating through the shedder plates, and the hollow plunger reciprocating between the shedder plates and having its surfaces on opposite sides of the bore shaped to fit over the forming arms.

WVILLIAM I-I. PARKER. Witnesses WARREN B. I-IUTCHINSON, FRANK L. STUBBS. 

